Amino acid sequences of cytochrome c and ribulose 5-phosphate epimerase from 40 organisms were chosen and phylogenetic trees were obtained for each of these two protein families.
Determine the correctness or otherwise of the following Assertion [A] and the Reason [R].
Assertion [A]: The two trees will not be identical.
Reason [R]: The nature and frequency of mutations in the two families are different.

A. Both [A] and [R] are true and [R] is the correct reason for [A]

B. Both [A] and [R] are true but [R] is not the correct reason for [A]

C. Both [A] and [R] are false

D. [A] is false but [R] is true

Answer: Option A